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Related papers: Generalized Quantum Repeater Graph States

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We propose a heralded quantum repeater protocol based on the general interface between the circularly polarized photon and the quantum dot embedded in a double-sided optical microcavity. Our effective time-bin encoding on photons results in…

Quantum Physics · Physics 2016-02-10 Tao Li , Guo-Jian Yang , Fu-Guo Deng

Quantum key repeater is the backbone of the future Quantum Internet. It is an open problem to determine, for an arbitrary mixed bipartite state shared between the stations of a quantum key repeater, how much key can be generated between its…

Quantum Physics · Physics 2026-03-10 Leonard Sikorski , Karol Horodecki , Łukasz Pawela

The standard approach to realize a quantum repeater relies upon probabilistic but heralded entangled state manipulations and the storage of quantum states while waiting for successful events. In the literature on this class of repeaters,…

Quantum Physics · Physics 2019-09-25 E. Shchukin , F. Schmidt , P. van Loock

Multipartite quantum repeaters play an important role in quantum communication networks enabling the transmission of quantum information over larger distances. To increase the rates for multipartite entanglement distribution, multiplexing…

The past decade has seen tremendous progress in experimentally realizing the building blocks of quantum repeaters. Repeater architectures with multiplexed quantum memories have been proposed to increase entanglement distribution rates, but…

Quantum Physics · Physics 2022-10-26 Yuan Lee , Eric Bersin , Axel Dahlberg , Stephanie Wehner , Dirk Englund

We propose a new approach to implement quantum repeaters for long distance quantum communication. Our protocol generates a backbone of encoded Bell pairs and uses the procedure of classical error correction during simultaneous entanglement…

Networked entanglement is an essential component for a plethora of quantum computation and communication protocols. Direct transmission of quantum signals over long distances is prevented by fibre attenuation and the no-cloning theorem,…

Quantum Physics · Physics 2016-10-26 Simon J. Devitt , Andrew D. Greentree , Ashley M. Stephens , Rodney Van Meter

We explore possibilities of entangling two distant material qubits with the help of an optical radiation field in the regime of strong quantum electrodynamical coupling with almost resonant interaction. For this purpose the optimum…

Quantum Physics · Physics 2025-10-10 J. Z. Bernád , G. Alber

We present a detailed rate analysis for a hybrid quantum repeater assuming perfect memories and using optimal probabilistic entanglement generation and deterministic swapping routines. The hybrid quantum repeater protocol is based on atomic…

Quantum Physics · Physics 2011-03-09 Nadja K. Bernardes , Ludmiła Praxmeyer , Peter van Loock

Quantum repeaters can overcome exponential photon loss in optical fibers, enabling heralded entanglement between distant quantum memories. The definitive benchmark for this entanglement is Bell nonlocality; however, recent…

This article explores the application of coding techniques for fault-tolerant quantum computation and extends their usage to fault-tolerant quantum communication. We review repeater-based quantum networks, emphasizing the roles of coding…

Quantum Physics · Physics 2024-08-08 Ching-Yi Lai , Kao-Yueh Kuo

A quantum internet is the holy grail of quantum information processing, enabling the deployment of a broad range of quantum technologies and protocols on a global scale. However, numerous challenges exist before the quantum internet can…

We present an in-depth analysis regarding the error resistance and optimization of our all-optical Bell measurement and ultrafast long-distance quantum communication scheme proposed in [arXiv:1503.06777]. In order to promote our previous…

Quantum Physics · Physics 2017-02-01 Fabian Ewert , Peter van Loock

Quantum emitter-based schemes for the generation of photonic graph states offer a promising, resource efficient methodology for realizing distributed quantum computation and communication protocols on near-term hardware. We present a…

Quantum Physics · Physics 2025-01-29 Maxwell Gold , Jianlong Lin , Eric Chitambar , Elizabeth A. Goldschmidt

Owing to the inevitable loss in communication channels, the distance of entanglement distribution is limited to approximately 100 kilometres on the ground. Quantum repeaters can circumvent this problem by using quantum memory and…

Quantum Physics · Physics 2021-06-08 Xiao Liu , Jun Hu , Zong-Feng Li , Xue Li , Pei-Yun Li , Peng-Jun Liang , Zong-Quan Zhou , Chuan-Feng Li , Guang-Can Guo

Quantum repeaters promise to deliver long-distance entanglement overcoming noise and loss in realistic quantum channels. A promising class of repeaters, based on atomic ensemble quantum memories and linear optics, follow the proposal by…

Quantum Physics · Physics 2010-04-05 Jonatan Bohr Brask , Anders Sondberg Sorensen

In a quantum network that successfully creates links, shared Bell states between neighboring repeater nodes, with probability $p$ in each time slot, and performs Bell State Measurements at nodes with success probability $q<1$, the end to…

Quantum Physics · Physics 2022-04-15 Ashlesha Patil , Joshua I. Jacobson , Emily van Milligen , Don Towsley , Saikat Guha

Quantum communication is a secure way to transfer quantum information and to communicate with legitimate parties over distant places in a network. Although communication over a long distance has already been attained, technical problem…

Quantum Physics · Physics 2019-03-07 Bikash K. Behera , Swarnadeep Seth , Antariksha Das , Prasanta K. Panigrahi

Entanglement is the key resource for many long-range quantum information tasks, including secure communication and fundamental tests of quantum physics. These tasks require robust verification of shared entanglement, but performing it over…

Cluster states and graph states in general offer a useful model of the stabilizer formalism and a path toward the development of measurement-based quantum computation. Their defining structure - the stabilizer group - encodes all possible…

Quantum Physics · Physics 2026-01-23 Konrad Szymański , Lina Vandré , Otfried Gühne